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Aviation History
1939
1939 - 0374.PDF
14b FLIGHT. FEBRUARY 9, 1939 weight is achieved, and it is estimated that the Delta 9 should carry as disposable load approximately the equivalent of its tare weight. That has, of course, been achieved before in orthodox aircraft, but never before, so far as we are aware, in a machine which does not stall, in the ordinary sense of the term. How passengers would take to cabins in which they obtained no direct view of the ground is another matter. Mr. Willoughby has schemed out an arrangement of lenses and ground glasses in the tables of the cabin whereby passengers would be provided with a reduced but very brilliant view of the ground below them. As the tendency seems to be towards flying at greater heights, at which nothing much can be seen anyway, it may be that the question of view for passengers will be regarded as of minor importance in the future. Scale model of the Delta 9. In each side wing is a cabin seating 18 passengers. Three liquid-cooled engines of 1,000 h.p. each are foreseen. R.AeS. Lecture on Ignition NEXT Thursday, February 16, Dr. G. E. Bairsto will lecture before the Royal Aeronautical Society on '' Some Factors Controlling the Development of Ignition on Aero Engines." Dr. Bairsto will review ignition developments to meet the conditions which now exist due to the adoption of 87- and 100- octane fuels, higher speeds and higher altitudes of operation The characteristics of present-day magnetos are considered and coil ignition and other alternatives are reviewed. The paper also deals with sparking plugs, cables, and screening. The lecture, which will be very fully illustrated, v ill be given in the Lecture Hall of the Institution of Mechanical Engineers, Storey's Gate, London, S.W.i, at 6.30 D.rfl.
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